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Elasticsearch\Common\Exceptions\NoNodesAvailableException: No alive nodes found in your cluster in Elasticsearch\ConnectionPool\StaticNoPingConnectionPool->nextConnection() (line 64 of /data/www/www.inth.ugent.be/vendor/elasticsearch/elasticsearch/src/Elasticsearch/ConnectionPool/StaticNoPingConnectionPool.php).
Elasticsearch\Transport->getConnection() (Line: 99)
Elasticsearch\Transport->performRequest() (Line: 43)
Elasticsearch\Namespaces\BooleanRequestWrapper::performRequest() (Line: 400)
Elasticsearch\Namespaces\IndicesNamespace->exists() (Line: 614)
Drupal\elasticsearch_connector\Plugin\search_api\backend\SearchApiElasticsearchBackend->search() (Line: 473)
Drupal\search_api\Entity\Server->search() (Line: 548)
Drupal\search_api\Query\Query->execute() (Line: 124)
Drupal\sliderwidgetminmax\Plugin\facets\widget\SliderMinMaxWidget->build() (Line: 406)
Drupal\facets\FacetManager\DefaultFacetManager->build() (Line: 91)
Drupal\facets\Plugin\Block\FacetBlock->build() (Line: 171)
Drupal\block\BlockViewBuilder::preRender()
call_user_func_array() (Line: 111)
Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 859)
Drupal\Core\Render\Renderer->doCallback() (Line: 421)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 165)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 166)
Drupal\Core\Render\Renderer->renderPlain() (Line: 183)
Drupal\Core\Render\Renderer->doRenderPlaceholder() (Line: 712)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}()
Fiber->start() (Line: 720)
Drupal\Core\Render\Renderer->replacePlaceholders() (Line: 597)
Drupal\Core\Render\Renderer->doRender() (Line: 240)
Drupal\Core\Render\Renderer->render() (Line: 153)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 154)
Drupal\Core\Render\Renderer->renderRoot() (Line: 286)
Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderPlaceholders() (Line: 135)
Drupal\Core\Render\HtmlResponseAttachmentsProcessor->processAttachments() (Line: 45)
Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 214)
Symfony\Component\HttpKernel\HttpKernel->filterResponse() (Line: 202)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)